Fig. 3
Main risk factors and pathways leading to influenza onset of each cluster. The odds ratio confidence intervals of red-colored items did not cross 1. In the row of main factors, \(\:\uparrow\:\) and \(\:\downarrow\:\) indicate that the higher and lower values of the factor contribute to the influenza onset, respectively. The interpretation of network structures can be difficult in some cases; the association between “lettuce” and “asthma” observed in Cluster 4 serves as one such example. Note that “use of over-the-counter medications” in Cluster 7 is considered to be the result of existing allergies and/or diseases.
